These are comprehensive tables of quantities minted (both business
strike and proof) and rough retail prices of U.S. coins from 1787-date.
Notes
on the purpose, fields, sources, etc. of this project.
[Last updated: 10/00 -- all denominations and commemoratives updated]

q.zip Contains q.csv, a "Comma Separated Value"
file with the above mintage data, by denomination. This is readable by
Excel and database programs like Access. Created 1/1999.
Further details on the contents of q.csv .

Extensions to Breen's Encyclopedia

I've always liked Walter Breen's Complete Encyclopedia of United
States and Colonial Coins (1988). It would be an interesting
project to provide organized updates to his book.
Some of the above information on quantities minted for coins since
1988 does this. His numbering system could be extended explicitly,
though. The scope of the project could be a lifetime's work, so
it is only feasible to work on small parts of it. Below are some
small extensions, indexed by Breen's numbering system.